Abstract

OBJECTIVE: Poor behavioral self-regulation in the first two decades of life has been identified as an important precursor of disease risk in adulthood. However, physiological regulation has not been well-studied as a disease risk factor before adulthood. We tested whether physiological regulation at age two, in the form of vagal regulation of cardiac function (indexed by RSA change), would predict three indicators of cardiovascular risk at age 16 (diastolic and systolic blood pressure and body mass index).

METHODS: Data came from 229 children who participated in a community-based longitudinal study. At age two, children were assessed for RSA baseline and RSA change [ln(ms)2] in response to a series of challenge tasks. These same children were assessed again at age 16 for diastolic and systolic blood pressure (mmHg), height (m) and weight (kg).

CONCLUSIONS: Vagal regulation of cardiac function in early childhood predicts select indicators of cardiovascular risk 14 years later. Early signs of attenuated vagal regulation could indicate an increased risk for elevated blood pressure before adulthood. Future research should test biological, behavioral, and psychological mechanisms underlying these long-term predictions.

Abstract

OBJECTIVE: Poor behavioral self-regulation in the first two decades of life has been identified as an important precursor of disease risk in adulthood. However, physiological regulation has not been well-studied as a disease risk factor before adulthood. We tested whether physiological regulation at age two, in the form of vagal regulation of cardiac function (indexed by RSA change), would predict three indicators of cardiovascular risk at age 16 (diastolic and systolic blood pressure and body mass index).

METHODS: Data came from 229 children who participated in a community-based longitudinal study. At age two, children were assessed for RSA baseline and RSA change [ln(ms)2] in response to a series of challenge tasks. These same children were assessed again at age 16 for diastolic and systolic blood pressure (mmHg), height (m) and weight (kg).

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